| Autor: |
Schaft N; Clinical and Tumor Immunology, Department of Medical Oncology, Erasmus Medical Center-Daniel den Hoed, Groene Hilledijk 301, 3075 EA Rotterdam, The Netherlands., Willemsen RA, de Vries J, Lankiewicz B, Essers BW, Gratama JW, Figdor CG, Bolhuis RL, Debets R, Adema GJ |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of immunology (Baltimore, Md. : 1950) [J Immunol] 2003 Feb 15; Vol. 170 (4), pp. 2186-94. |
| DOI: |
10.4049/jimmunol.170.4.2186 |
| Abstrakt: |
TCR with known antitumor reactivity can be genetically introduced into primary human T lymphocytes and provide promising tools for immunogene therapy of tumors. We molecularly characterized two distinct TCRs specific for the same HLA-A2-restricted peptide derived from the melanocyte differentiation Ag gp100, yet exhibiting different stringencies in peptide requirements. The existence of these two distinct gp100-specific TCRs allowed us to study the preservation of peptide fine specificity of native TCRalphabeta when engineered for TCR gene transfer into human T lymphocytes. Retroviral transduction of primary human T lymphocytes with either one of the two sets of TCRalphabeta constructs enabled T lymphocytes to specifically kill and produce TNF-alpha when triggered by native gp100(pos)/HLA-A2(pos) tumor target cells as well as gp100 peptide-loaded HLA-A2(pos) tumor cells. Peptide titration studies revealed that the cytolytic efficiencies of the T lymphocyte transductants were in the same range as those of the parental CTL clones. Moreover, primary human T lymphocytes expressing either one of the two engineered gp100-specific TCRs show cytolytic activities in response to a large panel of peptide mutants that are identical with those of the parental CTL. The finding that two gp100-specific TCR, derived from two different CTL, can be functionally introduced into primary human T lymphocytes without loss of the Ag reactivity and peptide fine specificity, holds great promise for the application of TCR gene transfer in cancer immunotherapy. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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